Bleeping Computer
![](https://privacynow.eu/wp-content/uploads/2021/04/submarine.png)
Hackers suspected to work for the Chinese government have used a new malware called PortDoor to infiltrate the systems of an engineering company that designs submarines for the Russian Navy.
They used a spear-phishing email specifically crafted to lure the general director of the company into opening a malicious document.